Intro to Quantum Mechanics by Griffiths

I'm in 3rd year intro to quantum, and I just got a 56% on my midterm. I'm looking for more material because my current textbook is Intro to quantum Physics by French and I really don't like it. I've had certain people recommend Griffiths but unfortunately my school's library doesn't have it. I was thinking of buying but I'm very apprehensive about spending another $100 which I don't have for a book I might use.

So my question is: Is Griffiths a good book for intro quantum, and if so is it worth the price?